Of course, the Government has handed control of parliaments motions to the house to decide the timetable. They did it sneakily and no-one heard about it.
Oh no, just checked they didn't. The Government decide and unless they produce a bill that is amendable and people can vote on those amendments then a vote to Repeal the Withdrawal Bill couldn't happen.
It's not that simple, but you probably know that anyway I'm guessing.